• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    A horn sonotrode (200) for an ultrasonic welder has a body and a collar (202) on which a replaceable sonotrode tip (201) can be placed. The flange (202) has a plurality of axial slots that divide the flange (202) into sections and an axially extending conical bore expanding outwardly as it extends axially toward the flange. 'outside. The body has a threaded bore adapted to engage a threaded inner portion of a collar lock (220). The collar sections (202) are forced outward against an inner wall of the tip of the sonotrode (201) when the tip of the sonotrode (201) is received on the collar (202) and the collar latch (220). ) is clamped in the threaded bore to secure the point of the sonotrode (201) on the collar (202).
    公开号:CH709725B1
    申请号:CH01408/15
    申请日:2014-02-24
    公开日:2017-12-15
    发明作者:Coto Guillermo
    申请人:Branson Ultrasonics Corp；
    IPC主号:
    专利说明:

    Description TECHNICAL FIELD [0001] The present description relates to ultrasonic welding machines, and in particular a sonotrode with a collar for ultrasonic welding machines.
    PRIOR ART [0002] This section provides basic information related to the present description which is not necessarily part of the prior art.
    [0003] A model of a typical ultrasonic metal welding device 100 is shown in FIG. The typical components of the ultrasonic metal-welding device 100 include an ultrasonic transducer 102, an amplifier 104, and a sonotrode 106. As is commonly understood by ultrasonic welding experts, a sonotrode is a metal bar that transfers the mechanical energy of the ultrasonic transducer to the work piece. The sonotrode has a typical half-wavelength length at the resonance frequency at which the ultrasonic transducer resonates by operating the sonotrode. The electrical energy supplied by a power supply 101 at a frequency of 20-60 kHz is converted into mechanical energy by the ultrasonic transducer 102. The mechanical energy converted in the ultrasonic transducer 102 is transmitted to a welding load 108 (for example two pieces of metal 112,114) through the amplifier 104 and the sonotrode 106. The amplifier 104 and the sonotrode 106 perform the functions of transmitting the mechanical energy as well as transforming the mechanical vibrations from the ultrasonic transducer 102 by a gain factor.
    The mechanical vibration that results on a tip of the sonotrode 110 is the movement that performs the task of assembling metals by welding. The tip of the sonotrode 110 may be of tungsten carbide or other high strength hard material. The metal parts 112, 114 to be joined by welding are placed adjacent to the tip of the sonotrode 110. The tip of the sonotrode 110 is brought into contact with an upper metal piece 112 to be welded. In the variant of FIG. 1, the sonotrode 106 has two sonotrode tips 110, one of which is brought into contact with the upper metal piece 112. The axial vibrations of the sonotrode 106 then become shear vibrations towards the upper piece of metal 112. The shearing vibrations are transmitted to the upper metal piece 112 which reciprocates with respect to the lower metal piece 114 so that the surfaces of the two metal pieces abut one on the other. other to a solder interface to be heated, and finally be melted together. A welding anvil 120 supports the lower metal piece 114. It should be noted that such an ultrasonic welder can be used to weld together multiple layers of metal sheets, such as several layers of aluminum foil or copper .
    [0005] A similar device is used to weld together plastic parts by ultrasound. The main difference is that the sonotrode oscillates so as to transmit vertical oscillations in the plastic parts. In other words, the sonotrode causes oscillating compression / decompression of the plastic parts together, so that the surfaces of the plastic parts abut one another at a solder interface to be heated, and finally be melted together.
    Ultrasonic welding machines are for example described in US Patents 5,658,408 "Method for Processing Workpieces by Ultrasonic Energy" and US 6,863,205 "Anti-Splice Welder" and in the published patent application US 2008/0 054 051 "Ultrasonic Welding Using Amplitude Profiling". The complete descriptions of the foregoing are incorporated herein by reference.
    [0007] Ultrasonic sonotrodes are fundamental elements of ultrasonic welding machines. In ultrasonic welding of metal and plastic films and fabrics, the sonotrodes are wear elements in that the tip of the sonotrode which is in contact with the workpiece to be welded deteriorates with time. This requires that the sonotrode be periodically replaced, which increases the costs of the ultrasonic welding process because the sonotrodes are relatively expensive components. To reduce this cost, some sonotrodes have replaceable tips. A replaceable tip type has an external contact portion with a threaded rod extending tightly into a threaded bore in the end of the sonotrode to secure the replaceable tip to the sonotrode. In another type, the end of the sonotrode has a stem protruding outwardly and on which the replaceable tip adjusts. A portion at the end of the rod is threaded and a front nut is then clamped on the threaded end portion of the rod against a front surface of the replaceable tip to secure the replaceable tip at the end of the rod. the sonotrode.
    Summary Description [0008] This section provides a general summary of the description that is not a complete description of its overall scope or any of its features.
    The horn sonotrode for an ultrasonic welder according to the invention comprises a projecting collar axially outwardly at one end of a body of the horn sonotrode. Alternatively, the collar protrudes outwardly from a shoulder of the sonotrode collar. The collar has a plurality of axial slots that divide it into sections and a tapered bore extending axially widening as it extends axially outwardly from the shoulder of the collar sonotrode. . The collared sonotrode has a threaded bore which extends axially inwardly from the end of the body from which the collar projects. Alternatively, the threaded bore extends axially inwardly from the shoulder of the collar sonotrode. The collar of the collared sonotrode receives a replaceable sonotrode tip which is placed above the collar and against the shoulder of the collared sonotrode. A snap lock having a threaded internal section and a conical outer section is threadably threaded into the threaded bore of the collar sonotrode. When the snap lock is clamped into the threaded bore of the sonotrode, the outer conical section of the snap lock forces the collar sections outward against an inner wall of the tip of the replaceable sonotrode that surrounds a bore of the The tip of the replaceable sonotrode ensures the attachment of the tip of the exchangeable sonotrode on the collar and sonotrode neck.
    Other fields of application will become apparent from the description below. The description and specific examples in this summary are intended for illustration only and are not intended to limit its scope.
    The figures described below are only for illustrating selected embodiments and not all possible implementations, and are not intended to limit the scope of the present description.
    Fig. 1 is a schematic view of an ultrasonic welder of the prior art; Fig. 2 is a perspective view of a horn sonotrode according to a variant with a ref removable sonotrode tip attached to a neck of the horn sonotrode; Fig. 3 is a perspective view of the horn sonotrode of FIG. 2 without the tip of the replaceable sonotrode attached to the collar; Fig. 4 is a perspective view of an end portion of the collar sonotrode of FIG. 3 denoted by a zone 4 in FIG. 3; Fig. 5 is a sectional view of the end portion shown in FIG. 4 of the collar sonotrode of FIG. 3 along axis 5-5 in FIG. 4; Fig. 6 is a perspective view of a tip of the replaceable sonotrode; and fig. 7 is a perspective view of a collar lock according to a variant of the present description.
    The numerical references refer to corresponding parts in the different views of the drawings. Detailed Description [0012] Exemplary embodiments are described hereinafter more fully with reference to the accompanying figures.
    FIG. Fig. 2 shows a collared sonotrode 200 and a tip of the exchangeable sonotrode 201 attached to a collar 202 (Fig. 3) of the collet sonotrode 200. FIG. 3 shows the sonotrode with collar 200 without sonotrode tip 201 replaceable fixed to the collar 202. The collar 202 protrudes axially outwardly at one end 205 of a body 203 of the horn sonotrode 200, such as the shoulder 204 (FIG 4) of the collet sonotrode 200 at the junction of the end 205 of the body 203 and the axial inner end 207 of the collar 202. As shown in FIG. 4, the collar 202 has a plurality of axially extending slots 206 which divide the collar 202 into a plurality of sections 208. Illustratively, the collar 202 has four axial slots 206 disposed equidistantly about the collar 202 dividing the collar 202 in four sections 208. As shown in fig. 5, the collar 202 has an axially extending conical bore 210 that widens radially outwardly as the bore 210 extends axially outwardly. In other words, the diameter of the bore 210 increases gradually as the bore 210 extends axially outwardly. The body 203 of the neck sonotrode 200 has a threaded bore 212 which extends axially inwardly of an axial inner end 211 of the bore 210. Alternatively, the threaded bore 212 also extends partially in the collar 202. It should be noted that it is not necessary that all the threaded bore 212 is threaded. The collar 202 may, for the purposes of illustration, have a generally square outer cross section with chamfered edges divided by the axial slots 206. It should be pointed out that the collar 202 may have a transverse external cross-section other than square with chamfered edges. For example, the collar 202 may have a polygonal cross section with chamfered edges where the polygon is different from a square. The collar 202 could also have a circular cross section.
    Fig. 6 shows the tip of the sonotrode 201 replaceable in more detail. The tip of the replaceable sonotrode 201 has an internal bore 214 defined by the inner wall 215 of the tip of the exchangeable sonotrode 201 surrounding the inner bore 214. The internal bore 214 has a cross section fitting to the outer cross section. 202. For the sake of illustration, the tip of the exchangeable sonotrode 201 has a square cross section as shown in FIG. 6. It should be noted, however, that the outer geometrical shape of the tip of the exchangeable sonotrode 201 may be other than square and may have another shape that is suitable for application.
    权利要求:
    Claims (5)
    [1]
    for which the tip of the sonotrode 201 replaceable is used. The tip of the exchangeable sonotrode 201 may comprise one or more contact surfaces 216 arranged as shown in the example of FIG. 6 on the outer sides 218 of the tip of the sonotrode 201 replaceable. The contact surface 216 may for example be a knurled surface. It should be noted that the surface or the contact surfaces could be arranged on other portions of the tip of the sonotrode 201 replaceable, such as on a front face of the tip of the sonotrode 201 replaceable. FIG. 7 shows a collar latch 220 which is used to secure the tip of the sonotrode 201 replaceable to the collar sonotrode 200. The collar 220 may be considered as a bolt formed having an inner threaded portion 222 outside and a tapered outer portion 224 that tapers radially outwardly from the threaded inner portion 222. The tapered outer portion 224 may have a tool-receiving member 226 (Fig. 2) in an outer end 228 (Fig. 7) in which attachment tool (not shown) can be inserted to facilitate clamping of the collar latch 220 as described below. The tool receiving member 226 may, for purposes of illustration, be a hexagonal cavity for receiving an Allen key, but it should be noted that it could be other than a hexagonal cavity. To assemble the tip of the sonotrode 201 replaceable sonotrode collar 200, the tip of the sonotrode 201 replaceable is placed on the neck 202 and up against the shoulder 204 of the horn sonotrode 200. The lock The collar 220 is then inserted into the bore 210 of the collar 202 and the threaded internal portion 222 into the threaded bore 212 of the collar sonotrode 200 and tightened. The internal threaded portion 222 is, for the purposes of illustration, a threaded shaft. As the snap lock 220 is tightened, the tapered outer portion 224 of the snap lock 220 pushes the collar sections 208 radially outwardly against the inner wall 215 of the tip of the replaceable sonotrode 201 thereby securing the snap lock. the tip of the sonotrode 201 replaceable on the collar 202 and the horn sonotrode 200. The previous description of the variants was used for illustration and description. It is not intended to be exhaustive or to limit the description. The individual elements or features of a particular variant are not generally limited to this particular variant, but, where appropriate, are interchangeable and may be used in a selected variation, even if they are not expressly shown or described. They can also be varied in different ways. These variations should not be considered as exceptions to this description, and all such changes are intended to be included in the scope of the description. The terms relating to a spatial position, such as "inside", "outside", "below", "below", "below", "above", "above" , and the like, can be used here to facilitate the description of an element or the relationship of the element with another element (s) as illustrated in the figures. The spatial position terms may be intended to encompass different orientations of the device in use or in operation in addition to the orientation illustrated in the figures. For example, if the device in the figures is reversed, elements described as "below" or "below" other elements or features would then be oriented "above" other elements or features. Thus, the example term "below" may encompass either an orientation above or below. The device can be rotated in another way (turned 90 degrees or in other orientations) and the spatial position descriptors used here can be interpreted accordingly. claims
    A sonotrode with a collar (200) for an ultrasonic welder, comprising: a body (203); a collar (202) on which a replaceable sonotrode tip (201) can be placed, the collar (202) protruding outwardly at one end (205) of the body (203) of the neck sonotrode (200), the collar (202) having a plurality of axial slots (206) dividing the collar (202) into sections (208) and an axially extending conical bore (210) expanding outwardly as it extends axially outwards; and the body (203) having a threaded bore (212) adapted to engage a threaded inner portion (222) of a snap lock (220), the threaded bore (212) extending axially inwardly of an axial inner end (211) of the conically extending bore (210) extending axially; the collar sections (208) being forced outwardly against an inner wall (215) of the sonotrode tip (201) when the tip of the sonotrode (201) is received on the collar (202) and the snap lock (220) is clamped in the threaded bore (212) securing the tip of the sonotrode (201) to the collar (202).
    [2]
    The horn sonotrode (200) according to claim 1, wherein the collar (202) has a polygonal cross section with chamfered edges divided by the axial slots (206).
    [3]
    The horn sonotrode (200) according to claim 1, wherein the collar (202) has a generally square cross section with chamfered edges divided by the axial slots (206).
    [4]
    The horn sonotrode (200) of claim 1 further comprising the snap lock (220), the snap lock (220) having a tapered outer portion (224) forcing the snare sections (202) against the tip of the collar (220). the sonotrode (201) when the threaded inner portion (222) of the snap lock (220) is clamped in the threaded bore (212).
    [5]
    The sonotrode flange (200) of claim 4 wherein the threaded inner portion (222) of the flange lock (220) is a threaded shaft.
    类似技术:
    公开号 | 公开日 | 专利标题
    CH709725B1|2017-12-15|Sonotrode with collar for ultrasonic welder.
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    CH668575A5|1989-01-13|TOOL FOR CENTERING A CLUTCH PLATE.
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    FR2660716A1|1991-10-11|HUB PART FOR A CLUTCH DISC AND MANUFACTURING METHOD THEREOF.
    JP4932628B2|2012-05-16|Workpiece holding device for cylindrical inner periphery cutting
    FR2690966A3|1993-11-12|Tool for deaeration of hydraulic systems.
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    EP0577536A1|1994-01-05|Assembly means for an axle support of a vehicle axle and mounting tool
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    FR2531647A1|1984-02-17|Bearing housing for rotary knife
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    KR101295948B1|2013-08-13|Tool horn for ultrasonic welder
    同族专利:
    公开号 | 公开日
    DE112014000973T5|2015-12-03|
    CN105073328A|2015-11-18|
    JP2016508884A|2016-03-24|
    WO2014130942A3|2014-10-16|
    US20140238615A1|2014-08-28|
    DE112014000973B4|2018-11-22|
    US8925612B2|2015-01-06|
    WO2014130942A2|2014-08-28|
    CN105073328B|2017-10-13|
    JP6212573B2|2017-10-11|
    引用文献:
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    法律状态:
    2018-04-13| NV| New agent|Representative=s name: IP PARTNERS J. WENGER, CH |
    2020-09-30| PL| Patent ceased|
    优先权:
    申请号 | 申请日 | 专利标题
    US201361768719P| true| 2013-02-25|2013-02-25|
    US14/186,327|US8925612B2|2013-02-25|2014-02-21|Ultrasonic collet horn for ultrasonic welder|
    PCT/US2014/018010|WO2014130942A2|2013-02-25|2014-02-24|Ultrasonic collet horn for ultrasonic welder|
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